Chair



FIG. 1 is a left front perspective view of a chair showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines represent environmental elements only and form no part of the claimed design. 

The ornamental design for a chair, as shown and described. 